quilt: update to latest stable

Signed-off-by: Jimmy Tang <jcftang@gmail.com>

Author: jcftang

pkgs/quilt.yaml

@@ -7,8 +7,8 @@ defaults:
   relocatable: false
 
 sources:
-- url: http://download.savannah.gnu.org/releases/quilt/quilt-0.63.tar.gz
-  key: tar.gz:fbdhrarbvkeejrkpcarzy7f4l2eaggcz
+- key: tar.gz:ys75gkbccsrir2gt5eq24tks447cjrh6
+  url: http://download.savannah.gnu.org/releases/quilt/quilt-0.64.tar.gz
 
 build_stages:
 - name: configure